WeiboTextView.java 文件源码

@Override
        public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
            int action = event.getAction();

//            LogUtils.printLog(WeiboTextView.class, "MotionEvent:" + action);

//            if (action == MotionEvent.ACTION_MOVE) {
//                isPressed = false;
//            }
            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    break;
                case MotionEvent.ACTION_UP:
                    break;

                case MotionEvent.ACTION_CANCEL:
                    buffer.setSpan(new BackgroundColorSpan(0x00000000), 0, weiboTextView.length(),
                            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                    Selection.setSelection(buffer, 0, weiboTextView.length());
                    break;
            }


            if (action == MotionEvent.ACTION_UP ||
                    action == MotionEvent.ACTION_DOWN) {
                int x = (int) event.getX();
                int y = (int) event.getY();

                x -= widget.getTotalPaddingLeft();
                y -= widget.getTotalPaddingTop();

                x += widget.getScrollX();
                y += widget.getScrollY();

                Layout layout = widget.getLayout();
                int line = layout.getLineForVertical(y);
                int off = layout.getOffsetForHorizontal(line, x);

                ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class);

                if (link.length != 0) {

                    int start = buffer.getSpanStart(link[0]);
                    int end = buffer.getSpanEnd(link[0]);

//                    LogUtils.printLog(WebViewUtils.class, "start:" + start + " end:" + end);

                    if (action == MotionEvent.ACTION_UP) {
                        link[0].onClick(widget);
                        buffer.setSpan(new BackgroundColorSpan(0x00000000), start, end,
                                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        Selection.setSelection(buffer, start, end);
                    } else if (action == MotionEvent.ACTION_DOWN) {
                        buffer.setSpan(new BackgroundColorSpan(weiboTextView.clickBgClolr), start, end,
                                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        Selection.setSelection(buffer, start, end);
                    }

                    if (widget instanceof WeiboTextView) {
                        ((WeiboTextView) widget).linkHit = true;
                    }
                    return true;
                } else {
                    Selection.removeSelection(buffer);
                    Touch.onTouchEvent(widget, buffer, event);
                    return false;
                }
            }


            return Touch.onTouchEvent(widget, buffer, event);
        }